Air-cushion for pump-operating mechanism



B. BRYNTESON.

AIR CUSHION FOR PUMP OPERATING MECHANISM.

APPLlcATmN HLED MAR.5.1919.

1,327,940. .Patented Jan-13,1920.

,Fiyi il Z JZ zz J2 BRYNTE BRYNrEsoN,

0F ODEBOLT, IOWA.

AIR-CUSHION FOB, PUMP-OPERATING MECHANISM.

Specification of Letters Patent.

Patented J an. 13, 1920.

Original application filed .Tune 8, 1918, Serial No. 238,985.Y Dividedand this application tiled March 5, 1919.

Serial No.

To all whom t may concern:

Be it known that I, BRYNTE BRYN'rnsoN, a citizen of the United States,residing at Odebolt, in the county of Sac and State of Iowa, haveinvented certain new and useful Improvements in Air-Cushions for Pump-Operating Mechanism, of which the following is a specification.

The invention relates to an air cushion for pump operating mechanism andis a division of an application filed by me June 8, 1918, Serial Number288,985.

The object of the present invention isto provide a simple, practical andeiiicient air cushioning device of strong, durable and comparativelyinexpensive construction and designfor connecting two sectionsof areciprocatory pump rod and to be interposed betweenthe power-oroperating mechanism to prevent injury to either mechanism.

With these and vo ther objects in view the invention consists in theconstruction and novel combination and arrangement of parts hereinafterfully described, illustrated in the accompanying drawings, and pointedout in the claims hereto appended, it being understood that variouschanges in the form, proportion, size and minor details of construction,within the scope of the appended claims may be resorted to withoutdeparting from the spirit or sacrificing any of the advantages of theinvention.

ln the drawing Figure 1 is a side elevation of a cushioning device forpump rods constructed in accordance with this invention.

Fig. 2 is a vertical sectionalr view of the Sallie.

Fig. 3 is a vertical sectional view of the cushioning deviceillustrating a slightly different lower pump rod attaching means fromthat shown in Figs. 1 and 2.

In the accompanying drawing, in which is illustrated the preferredembodiment of the invention, 1 designates a pump rod composed of upperand lower sections 2 and 3 yieldably connected by means of a coiledspring 4 and the air cushioning device 5 to enable thc pump rod to bereciprocated through the alternate meshing of the pinions with themaster gear as shown in ,the aforesaid application or with any otheroperating means, without jarring or injuring the pump or other deviceoperated by the mechanism and without the pump rod. Y

The cushioning device 5 .comprises a cylinder 6 receiving a piston 7mounted on the upper section ofthe pump rod and equipped with a suitablepacking 8. The cylinderis provided at its upper end with a head or endwall 9 having a central opening 10 through which passes the pump rodormember 1; and the spring 4i, which is sleeved on the upper section ofthe pump rod or member, is interposed liability of breaking between theupper section or member and the oylinderfor cushioning the parts, asuitable stop 11, such as a pin orV key, being provided to holdthe endof the spring. A washer 12 isinterposed between the pin or key l1 andthe upper end of the spring to form a seat for the latter. provided withan upper guide 13, preferably in the form of a yoke and receiving theupper section of the pump rod. The lower end of the cylinder is providedwith a de-` pending portion 14 converged downwardly and suitably securedto the upper end of the lower section 3 of the pump rod 1. The upper andlower` sections 2 and 3 of the pump rod are connected by a chain 15 orother suitable flexible connection, which permits a limited independentmovement of thev parts to enable the cushioning device to perform itsfunction and atthe same time provides a positive unyielding connectionbetween the upper and lower sections when the upper section has reached.the'limitrof its independent upward movement.l

the vupper section 2 of The 'cylinder is The blower depending portion 14which i Y extends from the lower end of the cylinder 6 to the lowersection of the'pump rod may be in the form of a yoke as illustrated inFig. 3 of the drawings, but if desired a substantially conical cylinderhead 14a may be provided, as illustrated in Figs. 1 and 2 of thedrawings. When the cylinder 6 is equipped with' the tapered head 14a thelatter is preferably provided at`the top with an annular or'cylindricalflange 16 which is threaded on the lower end of the cylinder, as clearlyindicated in Fig. 2 of the drawing, and the lower section 3 of the pumprod passes through a tubular-.portion 17 ofthe bottom of the invertedconical head 121a and suitable fastening means.

What, I. claim is:

' member composed of upper and lower sections, a flexible connectionbetween the sections to permit limited independent movement thereof andcushioning means comprising a cylinder mounted on one ot' the sectionsand a piston operating in the cylinder and carried by the other sectionor' the reciprocatory member.

2. The combination of a reciprocating member composed of upper and lowersections, a flexible connection between the sections to permit a limitedindependent movement thereol and cushioning means comprising a cylindertions, a piston operating in the cylinder and carried by the othersection of the reciprocatory member, an upper guide mounted upon the.cylinder and slidably receiving the upper section of the said member,and means depending from the cylinder for connecting the lower sectionof the member with the same. c

3. The combination of a reciprocating member, composed of upper andlower sections, a flexible connection between the sections to permitlimited independent movement thereof and cushioning means comprising acylinder mounted on one of the secmounted on one of the sec-VV tions, apiston operating in the cylinder and carried by the other section of thereciprocatory member, and a coiled spring disposed on the upper sectionand bearing upon the cylinder and arranged to cushion the parts.

4. The combination of a reciprocating member, composed of upper andlower sections, a chain connecting the upper Vand lower sections, acylinder located above the lower section and provided with an upper endwall having an opening receiving the said upper section or' thereciprocatory member, said cylinder being opened at the bottom andprovided with depending portions secured to the said lower section ofthe reciprocatory the upper section of the said member and operatingwithin Y the cylinder, a guide mounted upon the upper end O' thecylinder and composed oit spaced sides and a connecting portion havingan opening receiving the upper section of the said member, and a coiledspring located within the guide and disposed on the upper section of thesaid member and arranged to cushion the latter and the cylinder.

In testimony whereof I hereunto ailiX my signature.

BRYNTE BRYNTEsoN.

member, a piston carried by'

